1. At full load 20 MHz bandwidth oscilloscope, see Test Configuration section.
PART NUMBER KEY
VSK-S2 -
XX
U
Base Number
Output Voltage
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SERIES:
VSK-S2
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DESCRIPTION:
AC-DC POWER SUPPLY
date
10/26/2015
│
page
2 of 5
INPUT
parameter
voltage
frequency
current
inrush current
leakage current
no load power consumption
at 115 Vac
at 230 Vac
at 115 Vac
at 230 Vac
7
14
0.15
0.2
conditions/description
min
85
120
47
typ
max
305
430
63
55
31
units
Vac
Vdc
Hz
mA
mA
A
A
mA
W
OUTPUT
parameter
maximum capacitive load
line regulation
load regulation
voltage accuracy
switching frequency
conditions/description
3.3 and 5 Vdc output models
9 and 12 Vdc output models
15 Vdc output model
24 Vdc output model
at full load
at 10 ~ 100% load
3.3 Vdc model
all other models
±2
±5
±6
±5
100
min
typ
max
4,000
2,200
1,000
680
units
μF
μF
μF
μF
%
%
%
%
kHz
PROTECTIONS
parameter
over current protection
short circuit protection
conditions/description
auto restart
continuous, auto restart
min
110
typ
max
units
%
SAFETY & COMPLIANCE
parameter
isolation voltage
safety approvals
safety class
conducted/radiated emissions
ESD
radiated immunity
EFT/burst
surge
conducted immunity
PFM
voltage dips & interruptions
MTBF
RoHS
conditions/description
input to output for 1 minute
UL 60950-1
class II
CISPR22/EN55022 Class B
IEC/EN61000-4-2 class B, contact ±4kV, air ±8kV
IEC/EN61000-4-3 class A, 10V/m
IEC/EN61000-4-4 class B, ±2kV (external circuit required, see figure 3)
IEC/EN61000-4-5 class B, ±2kV (external circuit required, see figure 3)
IEC/EN61000-4-6 class A, 10 Vr.m.s
IEC/EN61000-4-8 class A, 10 A/m
IEC/EN61000-4-11 class B, 0%-70%
as per MIL-HDBK-217F, 25°C
2011/65/EU
300,000
hours
min
3,000
typ
max
units
Vac
ENVIRONMENTAL
parameter
operating temperature
storage temperature
operating humidity
storage humidity
non-condensing
non-condensing
cui.com
conditions/description
see derating curves
min
-25
-25
typ
max
70
85
90
95
units
°C
°C
%
%
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DESCRIPTION:
AC-DC POWER SUPPLY
date
10/26/2015
│
page
3 of 5
DERATING/EFFICIENCY CURVES
o
utput power vs. ambient temperature
(100~305 Vac; 140~430 Vdc)
~
~
100
100
80
60
40
20
output power vs. input voltage
(25°C)
~
~
100
140
Load (%)
60
50
40
20
~
~
Load (%)
80
-25
-10
0
55
70
Ambient Temperature (°C)
85
120
~
~
305
430
efficiency vs. output power
(Vin=230 Vac)
90
85
efficiency vs. input voltage
(full load)
90
Input Voltage (Vac/Vdc)
Efficiency (%)
80
75
70
65
60
55
50
10
20
30
40
50
60
70
80
90
100
Efficiency (%)
VSK-S2-24U
VSK-S2-12U
VSK-S2-5U
85
80
75
70
65
85
120
220
240
264
305
VSK-S2-24U
VSK-S2-12U
VSK-S2-5U
Load (%)
Input Voltage (Vac)
MECHANICAL
parameter
dimensions
case material
weight
conditions/description
33.70 x 22.20 x 18.00 (1.327 x 0.874 x 0.708 inch)
UL94V-0
20
g
min
typ
max
units
mm
MECHANICAL DRAWING
units: mm [inches]
tolerance: ±0.50 [±0.020]
pin section tolerance: ±0.10 mm [±0.004]
PIN CONNECTIONS
PIN
1
2
3
4
FUNCTION
AC(N)
AC(L)
-Vo
+Vo
Fro nt vie w
∅
1.10[0.43]
2
4
1
3
1
3
4
2
Bo tt o m vie w
Recommended PCB Layout
Top View
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DESCRIPTION:
AC-DC POWER SUPPLY
date
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│
page
4 of 5
TEST CONFIGURATION
AC(L)
FUSE
Copper sheet
AC(L)
+Vo
C1
C2
Figure 1
AC( N)
AC/DC
AC(N)
-Vo
Load
Connect
Oscillograph Probe
12. 7m m
25. 4m m
25. 4m m
Table 1
External components
C1
C2
1μF ceramic
10μF electrolytic
TYPICAL APPLICATION CIRCUIT
FUSE
M OV
AC (N)
NTC
AC (L)
Figure 2
CX
AC (L)
+Vo
C1
C2
TVS
AC / DC
AC (N)
+
RL
-Vo
Table 2
Recommended external circuit components
Model
VSK-S1-3R3U
VSK-S1-5U
VSK-S1-9U
VSK-S1-12U
VSK-S1-15U
VSK-S1-24U
FUSE
1A/300V, slow blow
1A/300V, slow blow
1A/300V, slow blow
1A/300V, slow blow
1A/300V, slow blow
1A/300V, slow blow
MOV
S14K350
S14K350
S14K350
S14K350
S14K350
S14K350
NTC
10D-11
10D-11
10D-11
10D-11
10D-11
10D-11
R1
47Ω/3W
47Ω/3W
47Ω/3W
47Ω/3W
47Ω/3W
47Ω/3W
CY3, CY4
2.2nF/400V
2.2nF/400V
2.2nF/400V
2.2nF/400V
2.2nF/400V
2.2nF/400V
CX
0.4μF/305Vac
0.1μF/305Vac
0.1μF/305Vac
0.1μF/305Vac
0.1μF/305Vac
0.1μF/305Vac
LCM
10 mH
10 mH
10 mH
10 mH
10 mH
10 mH
TVS
1
SMBJ7.0A
SMBJ7.0A
SMBJ12A
SMBJ20A
SMBJ20A
SMBJ30A
C1
2
1μF/50V
1μF/50V
1μF/50V
1μF/50V
1μF/50V
1μF/50V
C2
3
220μF
220μF
120μF
120μF
120μF
68μF
EMC RECOMMENDED CIRCUIT
AC (L)
Figure 3
FUSE
R1
CY3
M OV
CY4
LCM
AC (L)
CX
+Vo
C1
C2
TVS
AC / DC
+
RL
AC (N)
AC (N)
-V
o
Notes:
1. See Table 2 for EMC components.
2. TVS is a recommended component to protect post-circuits if converter fails.
3. C1 is a ceramic capacitor used to filter high frequency noise.
4. C2 is an electrolytic capacitor. We recommend using high frequency and low impedence electrolytic capacitors. For capacitance and current of capacitor please refer to the
manufacture’s datasheet. Voltage derating of capacitor should be 80% or above.
5. All specifications are measured at rated input voltage, rated output load, TA=25°C, and humidity < 75% unless otherwise specified.
cui.com
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product page.
CUI Inc
│
SERIES:
VSK-S2
│
DESCRIPTION:
AC-DC POWER SUPPLY
date
10/26/2015
│
page
5 of 5
REVISION HISTORY
rev.
1.0
1.01
1.02
1.03
1.04
description
initial release
updated features
V-Infinity branding removed
updated derating curves and spec
internal inductor & PCB structure changed
date
04/19/2012
06/04/2012
08/16/2012
11/12/2013
10/26/2015
The revision history provided is for informational purposes only and is believed to be accurate.
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20050 SW 112th Ave.
Tualatin, OR 97062
800.275.4899
CUI offers a two (2) year limited warranty. Complete warranty information is listed on our website.
Fax 503.612.2383
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techsupport@cui.com
CUI reserves the right to make changes to the product at any time without notice. Information provided by CUI is believed to be accurate and reliable. However, no responsibility is
assumed by CUI for its use, nor for any infringements of patents or other rights of third parties which may result from its use.
CUI products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. A critical component is any component of a
life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
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